Control valve

ABSTRACT

A control valve with a planar seal structure having a valve body with a water inlet, water outlet, and water drainage port. A spool with a planar seal structure and having fixed valve plate and movable valve plate is disposed in the valve body. The movable valve plate is rotationally fitted to the fixed valve plate. The fixed valve plate has a plurality of through-holes. One through-hole with an arc and fan shape is in communication with the water outlet. The outer diameter of the through-hole with an arc and fan shape is greater than that of another through-hole of the fixed valve plate. The through-hole is in communication with the valve body&#39;s water inlet. The fixed valve plate has at least one arc communicating blind hole. The through-holes of the fixed valve plate are mutually fitted with the communicating blind hole.

FIELD OF THE INVENTION

This invention relates to the field of water treatment system, especially for the control valve that adopting hermetic head faces construction.

DESCRIPTION OF THE RELATED ART

In recent years, with the wider application of the control valve with hermetic head faces construction in water treatment field, the market has approved the structure of flat valve. Nowadays, industrial or residential water treatment systems must use control valve to switch channel For the control valve of softener system, it should achieve softening, backwash, brine draw, brine refill and fast rinse these functions; for control valve of filter system, it should achieve filtration, backwash and fast rinse these functions. For illustration purposes, the backwash, brine draw, brine refill and fast rinse of softener system are collectively called as regeneration process; the backwash and fast rinse of filter system are collectively called as rinse process.

For industrial fields, especially for the water treatment system that is applied to steam boiler, the hardness of water should be no more than 0.03 mmol/L when it goes into the boiler. Therefore, it often requires that there is no raw water flows into the boiler when the control valve in the regeneration process of the water treatment system. Thus, the existing flat valves on the market are with this structure basically, namely there is no water flows out when in regeneration process. For hot water boilers, the requirement of inlet water hardness is lower, not higher than 0.6 mmol/L. the regeneration process of water treatment system generally takes more than two hours, rinse process usually takes 30 minutes. For the water treatment system that no water flows out from outlet when in the regeneration process, to ensure an adequate water supply to the rear systems during the regeneration or rinse process, it requires the larger water tank.

For residential water treatment systems, especially for household water treatment systems, the requirement of inlet water is lower. The residential water treatment systems generally are without the water tank, which leads to no water supply when need water urgently when in regeneration or rinse process. Therefore, in the market of North America and Europe, the household water treatment systems can provide the raw water when in regeneration or rinse process. The raw water described in this article refers to untreated water.

Existing water treatment control valve adopts hermetic head faces construction. Such as Chinese patent CN201305482Y Multi-functional Softener Valve, CN201305482Y Multi-functional Softener Valve, which provides a kind of control valve that sets the fixed disk to three layers—the outermost layer is outlet; The moving disk only matches to fixed disk in service status, and in other status, the moving disk can not cover the outlet completely. This structure makes the valve body with complicated structure, moving disk and fixed disk complicated, and makes trouble.

SUMMARY OF THE INVENTION

The present invention provides a control valve to overcome the deficiency of no raw water flowing out when the existing flat valve in regeneration or rinse process, and it is applicable to all of softener systems and filter systems.

To achieve the above objects, the present invention provides a control valve that adopts hermetic head faces construction, which includes valve body, moving disk and fixed disk that are rotating in the sealing surface to match with each other. The described valve body is provided with inlet, outlet and drain. There are many through-holes in described fixed disk. Among them, one through-hole is connected to outlet, the outer diameter of which is bigger than other through-holes and forms an arc-shaped bulge that is from center to circumferential direction. There is one through-hole at least of moving disk connected to inlet, and has a through blind hole with an arc-shaped bulge from center to circumferential direction. The outer diameter of this through blind hole is bigger than the outer diameter of described inlet. The arc-shaped bulges of fixed disk and moving disk are overlapped to match with each other when valve in softener or filter status.

In use, when the control valve is in softener or filter status, the through-hole of moving disk is connected to inlet all the time, the arc-shaped bulge of through blind hole in moving disk and the one in fixed disk overlap and match with each other. When the control valve is in regeneration or rinse status, the through-hole of moving disk is connected to inlet all the time, the arc-shaped bulge of through blind hole in moving disk and the one in fixed disk overlap incompletely. At that time, a part of water from inlet flows through this incompletely overlapped part into the through-hole of fixed disk that connected to outlet Finally, the water flows out from outlet.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top view of one kind of fixed disk for the control valve that is no water flows out in regeneration status;

FIG. 2 is a top view of one kind of moving disk that matching with FIG. 1;

FIG. 2A is a cross-sectional view of FIG. 2;

FIG. 3 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 1 and FIG. 2;

FIG. 4 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 1 and FIG. 2;

FIG. 5 is a top view of another kind of fixed disk for the control valve that is no water flows out in regeneration status;

FIG. 6 is a top view of one kind of moving disk that matching with FIG. 5;

FIG. 6A is a cross-sectional view of FIG. 6;

FIG. 7 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 5 and FIG. 6;

FIG. 8 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 5 and FIG. 6;

FIG. 9 is a top view of one kind of fixed disk for the control valve that raw water flows out in regeneration status; (The surface of fixed disk is divided to six equal parts)

FIG. 9A is a cross-sectional view of FIG. 9;

FIG. 10 is a top view of another kind of fixed disk for the control valve that raw water flows out in regeneration status;

FIG. 10A is a cross-sectional view of FIG. 10;

FIG. 11 is a top view of one kind of moving disk that matching with FIG. 9 or FIG. 10;

FIG. 11A is a cross-sectional view of FIG. 11;

FIG. 12 is a top view of another kind of moving disk that matching with FIG. 9 or FIG. 10;

FIG. 12A is a cross-sectional view of FIG. 12;

FIG. 13 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 9 and FIG. 12;

FIG. 14 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 9 and FIG. 12;

FIG. 15 is a top view of one kind of fixed disk for the control valve that raw water flows out in rinse status in filter system; (The surface of fixed disk is divided to six equal parts)

FIG. 15A is a cross-sectional view of FIG. 15;

FIG. 16 is a top view of one kind of moving disk that matching with FIG. 15;

FIG. 16A is a cross-sectional view of FIG. 16;

FIG. 17 is a combinatorial drawing of the moving disk and fixed disk when the system in filter status that composed of FIG. 15 and FIG. 16;

FIG. 18 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 15 and FIG. 16;

FIG. 19 is a top view of one kind of fixed disk for the control valve that raw water flows out in regeneration status; (The surface of fixed disk is divided to seven equal parts)

FIG. 20 is a top view of one kind of moving disk that matching with FIG. 19;

FIG. 21 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 19 and FIG. 20;

FIG. 22 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 19 and FIG. 20;

FIG. 23 is a top view of one kind of fixed disk for the control valve that raw water flows out in regeneration status; (The surface of fixed disk is divided to eight equal parts)

FIG. 23A is a cross-sectional view of FIG. 23;

FIG. 24 is a top view of one kind of moving disk that matching with FIG. 23;

FIG. 24A is a cross-sectional view of FIG. 24;

FIG. 25 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 23 and FIG. 24;

FIG. 26 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 23 and FIG. 24;

FIG. 27 is a top view of one kind of fixed disk for the control valve that raw water flows out in regeneration status; (The surface of fixed disk is divided to eight equal parts)

FIG. 28 is a top view of one kind of moving disk that matching with FIG. 27;

FIG. 28A is a cross-sectional view of FIG. 28;

FIG. 29 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 27 and FIG. 28;

FIG. 30 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 27 and FIG. 28;

FIG. 31 is a top view of one kind of fixed disk for the control valve that raw water flows out in regeneration status; (The surface of fixed disk is divided to nine equal parts)

FIG. 32 is a top view of one kind of moving disk that matching with FIG. 30;

FIG. 32A is a cross-sectional view of FIG. 32;

FIG. 33 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 31 and FIG. 32;

FIG. 34 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 31 and FIG. 32;

FIG. 35 is a top view of one kind of fixed disk for the control valve that raw water flows out in regeneration status; (The surface of fixed disk is divided to nine equal parts)

FIG. 36 is a top view of one kind of moving disk that matching with FIG. 35;

FIG. 36A is a cross-sectional view of FIG. 36;

FIG. 37 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 35 and FIG. 36;

FIG. 38 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 35 and FIG. 36;

FIG. 39 is a top view of one kind of fixed disk for the control valve that raw water flows out in regeneration status; (The surface of fixed disk is divided to ten equal parts)

FIG. 40 is a top view of one kind of moving disk that matching with FIG. 39;

FIG. 41 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 39 and FIG. 40;

FIG. 42 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 39 and FIG. 40;

FIG. 43 is a top view of one kind of fixed disk for the control valve that raw water flows out in regeneration status; (The surface of fixed disk is divided to ten equal parts)

FIG. 44 is a top view of one kind of moving disk that matching with FIG. 43;

FIG. 45 is a combinatorial drawing of the moving disk and fixed disk when the system in service status that composed of FIG. 43 and FIG. 44;

FIG. 46 is a combinatorial drawing of the moving disk and fixed disk when the system in backwash status that composed of FIG. 43 and FIG. 44;

FIG. 47 is a structure schematic view of this invention that is in softening water status in FIG. 25;

FIG. 48 is a structure schematic view of this invention that is in backwash status in FIG. 26;

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Existing control valve with hermetic head faces construction that has a variety of matching ways of moving disk and fixed disk. In the fixed disk, there has set different numbers of holes that in cooperation with the moving disk. And the layouts of the holes are five equal parts, six equal parts, seven equal parts, eight equal parts, nine equal parts, ten equal parts, eleven equal parts and twelve equal parts, etc. Sometimes, the holes are set not in equal parts. Some moving disks have a through-hole and a through blind hole, and some moving disks have many through-holes and many through blind holes.

Control valve of the present invention can be used to softener system, also can be used to filter system. When used to softener system, the valve body is provided with inlet, outlet, drain and brine inlet, injector inlet and injector outlet, and nozzle of injector. When used to filter system, the valve body is provided with inlet, outlet and drain.

It is the structure shown in FIG. 1 to FIG. 4 that no raw water flows out in the existing water treatment regeneration process, which has described in Patent CN2719820Y Multi-functional Flow Control Valve for Water Treatment System, and it is unnecessary to go into details here.

It is another structure shown in FIG. 5 to FIG. 8 that no raw water flows out in the existing water treatment regeneration process.

EXAMPLE 1

It is the project shown in FIG. 9 to FIG. 14 that refilling with soft water and raw water flowing out when in regeneration status for the up-flow regeneration softener valve, which has the fixed disk with six equal parts structure.

This example uses fixed disk and moving disk shown in FIG. 10 and FIG. 11. The valve body of the multi-functional softener valve in this example is provided with inlet 20, outlet 21, drain 22, upper filter connector 16, lower filter connector 17 and branch of flow channel 26. On branch of flow channel, there is the injector inlet 24, injector outlet 25 that connected to the lower filter connector 17, brine inlet 23 and brine control valve 5 connected to brine inlet 23. In valve body 1, there is fixed disk 3, moving disk 4, seal ring 6 and the shaft 2 that can rotate the moving disk 4. There is the sixth through-hole 36 connected to drain 22 of valve body in the center of fixed disk 3. In the outer rotating radius, there are five through-holes. Among them, the first through-hole 31 and the second through-hole 32 are connected to upper filter connector 16, the third through-hole 33 is connected to the lower filter connector 17, and the fourth through-hole 35 is connected to outlet 21. The outer diameter of through-hole 35 is bigger than other through-holes and the edge of the sealing surface. The fifth through-hole 37 is connected to injector inlet 24 by branch of flow channel 26. There is a through-hole 41 connecting to inlet 20 all the time, a radial through blind hole 43 that is from center to circumferential direction, and an arc-shaped blind hole 42 that round the central in the sealing surface of moving disk 4. A part of outer diameter of through blind hole 42 is bigger than other edges of the sealing surface and as big as the outer diameter of through-hole 34. The through-holes of fixed disk 3 and moving disk 4 are matching in the same rotating radius. In production, fixed disk 3 and moving disk 4 adopt different materials such as ceramic. The through-hole 31 and 32 of fixed disk can be connected to be one through-hole, but it is inconvenient to process.

Such designed softener valve has the following advantages: 1, Brine draw for regeneration and brine refill can be controlled by brine control valve 5 that only require a small flow, and the disk can be divided in six equal parts, which can increase the flow rate. 2, Brine refill can be controlled by procedure or brine control valve 5 manually when it needs. For the softener valve of residential softener, it can achieve brine refill after service, in service, or any other time when it needs, which has a wider range of applications. At the same time, it can save regeneration time. 3, Controlling by brine control valve 5, the brine tank can be refilled with soft water, which will enhance a better regeneration effect of resin. 4, This example adopts up-flow regeneration, which can enhance the regeneration effect of resin and save salt and water. 5, When it in backwash, regeneration and fast rinse, part of raw water can flow out from outlet directly, which can provide the emergency water when in regeneration process.

As shown FIG. 10, the outer diameter of the through-hole 35 is bigger than other through-hole and the edge of sealing surface; the part of outer diameter of blind hole 42 is bigger than the edge of other sealing surface and as big as the outer diameter of through-hole 35. The following illustration is only about the backwash status, and the other four functions are no longer specified

Backwash status: Referring to FIG. 47 and FIG. 48, by rotating the shaft 2, the through-hole 41 of moving disk 4 and the third through-hole 33 of fixed disk 3 overlap, the through blind hole 43 is connected to the first through-hole 31 and the sixth through-hole 36, the through blind hole 42 is only connected to the fourth through-hole 35, and the brine control valve 5 is closed. Because the outer diameter of the fourth through-hole 35 is bigger, the sealing surface of moving disk 4 covers it incompletely. At that time, a part of water flows from the inlet 20 into the through-hole 41 and then flows into the third through-hole 33, through valve body 1 to the lower filter connector 17, through the bottom strainer 12 to tank 10, flows through and rinses filter element 13, and the dirt goes through top strainer 11 to the upper filter connector 16, then goes through the first through-hole 31 and blind hole 43 to the sixth through-hole 36. Due to the connection of the sixth through-hole 36 and drain 22, the water flows out from drain 22; the other part of water flows from inlet 20 into the fourth through-hole 35, and then flows out from outlet 21 directly. At that time, the blind hole 42 is only connected to the fourth through-hole 35, and no water flows.

EXAMPLE 2

FIG. 15 to FIG. 18 are the schematic views of moving disk and fixed disk that for filter pipe device of the water purifier shown in patent CN2573049Y that adds the function of flowing out raw water, and the matching schematic views of moving disk relative to fixed disk in filter and backwash status.

EXAMPLE 3

FIG. 19 to FIG. 22 are the schematic views of moving disk being provided with one through-hole and two through blind holes when the fixed disk is divided to seven equal parts, and the matching schematic views of moving disk relative to fixed disk in service and backwash status.

EXAMPLE 4

FIG. 23 to FIG. 26 are the schematic views of moving disk being provided with two through-holes and one through blind hole when the fixed disk is divided to eight equal parts, and the matching schematic views of moving disk relative to fixed disk in service and backwash status.

EXAMPLE 5

FIG. 27 to FIG. 30 are the schematic views of moving disk being provided with one through-hole and two through blind holes when the fixed disk is divided to eight equal parts, and the matching schematic view of moving disk relative to fixed disk in service and backwash status.

EXAMPLE 6

FIG. 31 to FIG. 34 are the schematic views of moving disk being provided with two through-holes and one through blind hole when the fixed disk is divided to nine equal parts, and the matching schematic view of moving disk relative to fixed disk in service and backwash status.

EXAMPLE 7

FIG. 35 to FIG. 38 are the schematic views of moving disk being provided with one through-hole and two through blind holes when the fixed disk is divided to nine equal parts, and the matching schematic view of moving disk relative to fixed disk in service and backwash status.

EXAMPLE 8

FIG. 39 to FIG. 42 are the schematic views of moving disk being provided with one through-hole and two through blind holes when the fixed disk is divided to ten equal parts, and the matching schematic view of moving disk relative to fixed disk in service and backwash status.

EXAMPLE 9

FIG. 43 to FIG. 46 are the schematic views of moving disk being provided with two through-holes and one through blind hole when the fixed disk is divided to ten equal parts, and the matching schematic view of moving disk relative to fixed disk in service and backwash status.

Referring to FIG.1 to FIG. 46, in the fixed disk, the through-hole 31 and through-hole 32 are all connected to upper filter connector, through-hole 33 and through-hole 34 are all connected to lower filter connector, through-hole 35 is connected to outlet, through-hole 36 is connected to drain, through-hole 37 is connected to injector inlet, and through-hole 38 is connected to injector outlet; in the moving disk 4, through-hole 41 is connected to inlet of valve body all the time, 42 and 43 are all through blind holes, and through-hole 44 is connected to drain of valve body.

The illustration is only about down-flow softener that used to softener system. For filter system, it is no longer specified because it is similar as using to softener system. The following illustration is about fixed disk divided to eight equal parts and moving disk with one through-hole and two through blind holes.

Referring to FIG. 23 to FIG. 26, FIG. 47 and FIG. 48, the valve body 1 is provided with inlet 20, outlet 21, drain 22, brine inlet 23, and flow channels connected to top strainer 11 and bottom strainer 12 respectively. There is the branch of flow channel 26 in the channel from inlet 20 of valve body 1 to tank. This branch of flow channel 26 is provided with a nozzle of injector, and there is brine inlet 23 in the outlet of nozzle, which is connected to brine tank 14. Fixed disk 3 is set in the valve body 1, and achieves the matching of with moving disk 4 by rotating shaft 2. The fixed disk 3 of valve body 1 has many through-holes. Among them, the through-hole 35 is connected to outlet 21, the outer diameter of which matching with moving disk 4 is bigger than other through-holes and form an arc-shaped bulge that is from center to circumferential direction. The described fixed disk 4 matches with moving disk 3, and at least one through-hole 41 is connected to inlet 20 of valve body all the time. There is an arc-shaped blind hole 42 that has an arc-shaped bulge from center to circumferential direction at the place of matching with fixed disk. The outer diameter of arc-shaped blind hole is bigger than described inlet through-hole. And the arc-shaped bulge of fixed disk matches the one of moving disk.

Referring to FIG. 25 and FIG. 47, during normal service of softening, the through-hole 31 of fixed disk 3 is connected to through blind hole 41 of moving disk 4, the other through-holes of fixed disk 3 and the other through-holes or through blind holes of moving disk 4 are one-to-one match, which forms the flow direction shown as FIG. 45, namely, raw water flows into inlet 20, flows through through-hole 41 of moving disk 4, flows through fixed disk 3, valve body 1 and then into top strainer 11. After treated by filter element 13, flows into bottom strainer 12, turns back to through-hole 33 of fixed disk 3 through riser pipe, flows through the arc-shaped blind hole 42 of moving disk 4, goes into through-hole 35 of fixed disk 3. Finally, it goes out from outlet 21.

Referring to FIG. 26 and FIG. 48, during backwash, the through-hole 31 of fixed disk 3 and the through blind hole 41 of moving disk 4 are overlapped incompletely or not overlapped completely, the other through-holes of fixed disk 3 and the other through-holes or through blind holes of moving disk 4 are one-to-one match, which forms the flow direction shown as FIG. 46, namely, raw water flows into inlet 20, flows through through-hole 41 of moving disk 4, through fixed disk 3 and valve body 1 and then into bottom strainer 12 through riser pipe. After backwashing the filter element 13, flows into top strainer 11, finally turns back to through-hole 43 of fixed disk 3, flows through the blind hole 43 of moving disk 4, goes into through-hole 36 of fixed disk 3. Finally, it goes out from drain 22. The other part of raw water flows into the through-hole 35 directly that is overlapped incompletely, and then flows out from outlet 21.

When adopting the fixed disk and moving disk shown as FIG. 9 and FIG. 11 or FIG. 12, FIG. 10 and FIG. 11 or FIG. 12, FIG. 15 and FIG. 16, FIG. 19 and FIG. 20, FIG. 27 and FIG. 28, FIG. 31 and FIG. 32, FIG. 35 and FIG. 36, FIG. 39 and FIG. 40, FIG. 43 and FIG. 44, which can respectively forms the matching schematic views of moving disk relative to fixed disk in service and backwash status shown as FIG. 11 and FIG. 12, FIG. 15 and FIG. 16, FIG. 19 and FIG. 20, FIG. 27 and FIG. 28, FIG. 31 and FIG. 32, FIG. 35 and FIG. 36, FIG. 39 and FIG. 40, FIG. 43 and FIG. 44. And the flow direction is similar as FIG. 47 and FIG. 48, which is unnecessary to go into details here. 

What is claimed is:
 1. A control valve includes a valve body that is provided with inlet, outlet and drain. In valve body, there is the valve core with hermetic head faces construction. The described valve core is provided with fixed disk and moving disk. And the fixed disk and moving disk are rotating to match with each other. The characteristic is that the described fixed disk is provided with many through-holes, and the arc-shaped one of these through-holes is only connected to outlet. This through-hole in this fixed disk is a radial arc-shaped bulge from center to circumferential direction; it is in a rotating radius with other through-holes. The outer diameter of the arc-shaped part is bigger than other through-holes of fixed disk, and the inner diameter of this through-hole is smaller than arc-shaped outer diameter of other through-holes. The described moving disk is provided with at least one through-hole that is connected to inlet of valve body. The described moving disk is provided with at least one through blind hole that is arc-shaped. The described through-holes of fixed disk match the through blind holes of moving disk.
 2. In accordance with claim 1, the characteristic of the control valve is that the outer diameter of the through blind hole of moving disk is bigger than the described through-holes of moving disk.
 3. In accordance with claim 1, the characteristic of the control valve is that these described through-holes in the fixed disk are in cooperation with the moving disk. And the layouts of these holes are five equal parts, six equal parts, seven equal parts, eight equal parts, nine equal parts, ten equal parts, eleven equal parts or twelve equal parts, etc. Sometimes, the holes are set not in equal parts. The through blind holes of moving disk is a radial arc-shaped bulge from center to circumferential direction; The described through-holes of fixed disk match the through blind holes of moving disk.
 4. In accordance with claim 1, the characteristic of the control valve is that the described through-holes of fixed disk and the through blind holes of moving disk are connected to each other when the control valve is in softener or filter status.
 5. In accordance with claim 1, the characteristic of the control valve is that the described through-holes of fixed disk and the through blind holes of moving disk are overlapped incompletely or not overlapped completely when the control valve is in regeneration or rinse status.
 6. In accordance with claim 1, the characteristic of the control valve is that the described control valve is the softener valve used to the water treatment system of softening, or the filter valve used to water treatment system of filtration.
 7. A multi-functional softener valve adopts hermetic head faces construction, which includes valve body, injector, moving disk, fixed disk and brine control valve. The described valve body is provided with inlet, outlet, drain and brine absorption branch of flow channel. The described valve body is provided with through-holes connected to the upper filter, lower filter, and injector inlet, injector outlet connected to lower filter, the brine inlet set on brine absorption branch of flow channel, brine control valve set on brine inlet. There are many through-holes in described fixed disk, and the through-holes are distributed in six equal parts of cross section of fixed disk. On the cross section of the fixed disk, in counterclockwise direction, there are many through-holes. Among them, the first through-hole and second through-hole are connected to upper filter connector that can be set separately or connectedly in accordance with needs. The third through-hole is connected to lower filter, the fourth through-hole is connected to outlet, and the outer diameter of the fourth through-hole is bigger than other through-holes which form a radial arc-shaped bulge from center to circumferential direction. The fifth through-hole is connected to injector inlet. There is the sixth through-hole in the center of cross section of fixed disk that is connected to drain of valve body. The described fixed disk matches moving disk. On the cross section of moving disk, there is a through-hole connected to inlet of valve body, a radial through blind hole that is from center to circumferential direction, and an arc-shaped blind hole. This arc-shaped blind hole has an arc-shaped bulge from center to circumferential direction, and the outer diameter of it is bigger than inlet through-hole. The described arc-shaped bulge of fixed disk matches the one of moving disk.
 8. In accordance with claim 7, the characteristic of the described multi-functional softener valve is that the matching relationship of moving disk, fixed disk and brine control valve includes: when inlet through-hole is connected to the second through-hole, the arc-shaped blind hole is connected to the third through-hole and the fourth through-hole, the radial through blind hole is only connected to the sixth through-hole, and the brine control valve can be opened or closed; the outer diameter of the fourth through-hole of fixed disk is bigger than other through-holes on gyration radius; the part of outer diameter of arc-shaped blind hole on the fixed disk is as big as outer diameter of the fourth through-hole. In this fitting state, the big outer diameter parts of the fourth through-hole and arc-shaped blind through-hole are overlapped; when inlet through-hole is connected to the third through-hole, the arc-shaped blind hole is only connected to the fourth through-hole, the radial through-hole is connected to the first through-hole and the sixth through-hole, the brine control valve is closed, and the fourth through-hole is covered incompletely; when inlet through-hole is connected to the fifth through-hole, the arc-shaped blind hole is only connected to the first through-hole, the radial through-hole is connected to the second through-hole and the sixth through-hole, the brine control valve is opened, and the fourth through-hole is covered incompletely; when inlet through-hole is connected to the first through-hole, the arc-shaped blind hole is only connected to the second through-hole, the radial through blind hole is connected to the third through-hole and the sixth through-hole, the brine control valve is closed, and the fourth through-hole is covered incompletely.
 9. In accordance with claim 7, the characteristic of the described multi-functional softener valve is that the injector inlet and injector outlet are set on the brine absorption branch of flow channel.
 10. In accordance with claim 7, the characteristic of the described multi-functional softener valve is the described brine control valve can be ball valve, solenoid valve, check valve, diaphragm valve or gate valve.
 11. A water treatment device adopts one multi-functional softener valve at least, such as claims 7, and connected to the tank with resin, which can constitute the water treatment device.
 12. In accordance with claim 8, the characteristic of the described multi-functional softener valve is the described brine control valve can be ball valve, solenoid valve, check valve, diaphragm valve or gate valve. 